Lpg fuel conversion kits for petroleum driven vehicles. Can be converted in to duel fuel systems; vehicles can be driven on either petrol or lp gas without changing any existing engine systems; can be used in all 2 or 3 wheelers that run on petrol. Owing to the easy technology used, production can be started anywhere, any time. The advantage is that lp gas driven vehicles are zero pollution vehicles and economical as compared to those running on other fuels. The production capacity is 10,000 per month with minimum required machinery.